Description

The Hublot Big Bang Unico 421.OL.5180.RX (reference 421) is available now at Aurevorn Watches for $34,500. Every watch we sell is inspected and authenticated before it ships, so you can buy with confidence.

Hublot Big Bang Unico 421.OL.5180.RX Overview

The Unico 2 caliber was designed to equip smaller chronographs and also open the world of Hublot to new enthusiasts. It retains the unique design of its former version with a double coupling system visible from the dial side as well as a 72-hour power reserve. But thanks to various technical optimizations, including the introduction of a new, flatter automatic winding system, it has been reduced by 1.3 mm in thickness.

As a master of fusion and an alchemist of precious metals, Hublot has developed a new gold color with a warmer shade than the traditional 5N 18K gold. Containing mainly platinum, this exclusive King Gold alloy perfectly lends itself to all elements of polishing and satin finishing. Hublot watches blend the most unexpected materials like high-tech ceramic, rubber and carbon.

Why Buy the Hublot Big Bang Unico 421.OL.5180.RX from Aurevorn Watches

Before it is listed, this watch goes through our multi-point authentication: our specialists check the case, dial, movement and serial numbers against manufacturer references.

We ship your watch free with full transit insurance and adult signature on delivery, and every purchase is covered by our 14-day return window. Questions about this piece? Our team answers at info@aurevornwatches.com.

Browse more Hublot Watches in our collection, or read about the Hublot brand on the official Hublot website.

Authenticity & Buyer Assurance

Authenticity, Warranty & Delivery

  • Authenticated before listing: our specialists check the case, dial, movement and serial numbers against manufacturer references before the watch is listed.
  • Condition: New.
  • What is included: stated in the description and specifications (for example box, papers or watch only).
  • Warranty: 1-year Aurevorn warranty.
  • Returns: 14-day return window from delivery.
  • Shipping: Free, fully insured, adult signature on delivery, usually 2–5 business days. Shipping is free on orders over $15,000.

Frequently Asked Questions

Q: Is this Hublot watch authentic?

Yes. It was checked by our specialists before it was listed, and it is covered by our authenticity guarantee. Aurevorn Watches is an independent reseller and is not an authorized dealer or affiliate of Hublot.

Q: Can I return it?

Yes. You can return it within 14 days of delivery in the condition it arrived, with everything it came with. See our return policy.

Q: How do I order?

Place your order online. No payment is taken at checkout; our team contacts you to confirm the order and arrange payment. Questions? Call or WhatsApp +1 (701) 410-3828 or email info@aurevornwatches.com.

Delivery Options

Delivery Options

We offer a range of delivery options to suit your needs. Please check the details at the top of the page for this product’s specific delivery options.

Free Express Delivery (7 Days a Week)Free for orders over £200. For orders under £200, a £4.95 delivery charge applies.Express delivery is available on all items, everything that is immediately available and ordered by 9pm (Monday to Sunday) will be delivered the following day. You are shown during the checkout whether this option is available for your order. Orders received by 9pm (Monday to Sunday) may be delivered the following day, but this cannot be guaranteed.

Special Orders– Special orders are products with an extended lead time. Lead time information is displayed on the product page and in the shopping bag. This denotes the amount of time between taking your order and it’s estimated date of dispatch.

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